Insulated Leakproof Backpack Cooler Now that's a cool idea! Perfect for camping and fishing. Holds up to 18 cans (about 12 bottles) plus ice in an insulated zipper back pocket. Also features a small front pocket for straws and more. Specs: Red Mesh Material. Measures 16 by 12 inches with a 16 inch opening when the mouth of the backpack is opened.